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Ideal Standard/Armitage Shanks (same company). Graham merchants does a kit with a new washer and plastic plug to hold it in place.
Hmm. For an installation that would appear amateur, those solvent weld joints are very very tidy - almost as if they haven't actually...
That's my guess...bet the toilet connected to the 4" isn't vented either
Is it possible that because the joint to the 110mm is so low it was sucking the bath trap dry?
Ah, The old inverted trap plus reverse Tee trick..
No. It's something that makes no sense to me and should not be there.
I can't think why anyone would do something as silly as that..
Stupidity is the first word that comes to my mind.
Take it out.
Glad you managed it
The pipework isn't clipped properly, the PTFE on the joints shows the person doing the work wasn't a plumber, and the elbows will not...
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